
Available in United States and Canada
STYROFOAM™ Brand ROOFMATE™ Insulation, with 1/2" x 1/4" drainage channels on the bottom long edge, is designed for installation above waterproofing or roofing membranes in protected membrane roof (PMR) applications. This Type VI extruded polystyrene foam insulation helps keep the membrane at a more steady temperature, minimizing the effects of weathering, freeze-thaw cycles and damage during and after construction.
Building Code Compliance
Complies with ASTM C578 Type VI. Meets CAN/ULC S701 Type 4. Meets IBC/IRC requirements for foam plastic insulation. See ESR-2142, BOCA-ES RR 21-02, ICBO-ES ER-2257, CCMC - Evaluation Listing #04888-L. UL Classified, see Classification Certificate D369.
STYROFOAM™ Brand ROOFMATE™ Insulation CAD Details
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U.S. Commercial
STYROFOAM™ Brand ROOFMATE™ Insulation
The drainage channels on STYROFOAM™ Brand ROOFMATE™ Insulation make it an excellent choice for installation above waterproofing or roofing membranes in protected membrane roof (PMR) applications. It helps keep the membrane at a more steady temperature, minimizing the effects of weathering, freeze-thaw cycles and damage during and after construction.
Related Information
STYROFOAM™ ROOFMATE™ Insulation Product Information (100KB PDF)
20 Year Limited Warranty for Dow Roof Insulation in an American Hydrotech, Inc. Protected Membrane Roof Assembly (105KB PDF)
| Nominal Board Thickness(1), in | R-Value(2) | Board Size, ft | Edge Treatment | Min Compressive Strength(3), psi |
| 1.0 | 5.0 | 2 x 8 | Butt Edge | 40 |
| 1.5 | 7.5 | 2 x 8 | Butt Edge | 40 |
| 2.0 | 10.0 | 2 x 8 | Butt Edge | 40 |
| 2.5 | 12.5 | 2 x 8 | Butt Edge | 40 |
| 3.0 | 15.0 | 2 x 8 | Butt Edge | 40 |
| 3.5 | 17.5 | 2 x 8 | Butt Edge | 40 |
| 4.0 | 20.0 | 2 x 8 | Butt Edge | 40 |
|
(1) Not all product sizes are available in all regions. (2) R means resistance to heat flow. The higher the R-value, the greater the insulating power. R-values are expressed in ft2•h•°F/Btu. R-value determined by ASTM C518. (3) Vertical compressive strength is measured at 10% deformation (5% for STYROFOAM™ Brand HIGHLOAD 40, 60 and 100 Insulation products) or at yield, whichever occurs first. Since STYROFOAM™ Brand Extruded Polystyrene Foam products are visco-elastic materials, adequate design safety factors should be used to prevent long-term creep. For static loads, 3:1 is suggested. For dynamic loads, 5:1 is suggested. |
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07 20 00 Board Insulation
07 21 13 Board Insulation (Below Grade)
07 22 16 Roof Board Insulation (Protected Membrane Systems)
07 55 00 Protected Membrane Roofing Insulation
Canada Commercial
STYROFOAM™ Brand ROOFMATE™ Insulation
The drainage channels on STYROFOAM™ Brand ROOFMATE™ Insulation make it an excellent choice for installation above waterproofing or roofing membranes in protected membrane roof (PMR) applications. It helps keep the membrane at a more steady temperature, minimizing the effects of weathering, freeze-thaw cycles and damage during and after construction.
Related Information
STYROFOAM™ Brand ROOFMATE™ Insulation Product Information (100KB PDF)
Isolant Pour Système De Toiture À Membrane Protégée Spécification – type abrégée (Protected Membrane Roofing Guide Specification – (French) (19KB PDF)
| Nominal Board Thickness(1), in (mm) | R-Value(2) (RSI) | Board Size, ft (mm) | Edge Treatment | Min Compressive Strength(3), psi (kPa) |
| 1.0 (25.4) | 5.0 (0.88) | 2 x 4 (600 x 1200) | Butt Edge | 35 (240) |
| 1.5 (38.1) | 7.5 (1.32) | 2 x 4 (600 x 1200) | Shiplap | 35 (240) |
| 2.0 (50.8) | 10.0 (1.76) | 2 x 4 (600 x 1200) | Shiplap | 35 (240) |
| 2.5 (63.5) | 12.5 (2.20) | 2 x 4 (600 x 1200) | Shiplap | 35 (240) |
| 3.0 (75) | 15.0 (2.64) | 2 x 4 (600 x 1200) | Shiplap | 35 (240) |
| 3.5 (90) | 17.5 (3.08) | 2 x 4 (600 x 1200) | Shiplap | 35 (240) |
| 4.0 (100) | 20.0 (3.52) | 2 x 4 (600 x 1200) | Shiplap | 35 (240) |
|
(1) Not all product sizes are available in all regions. (2) R means resistance to heat flow. The higher the R-value or RSI (R-Value Système Internationale), the greater the insulating power. R-values are expressed in ft2•h•°F/Btu. RSI values are expressed in m2°C/W. R-value determined by ASTM C518. (3) Vertical compressive strength is measured at 10% deformation (5% for STYROFOAM™ Brand HIGHLOAD 40, 60 and 100 Insulation products) or at yield, whichever occurs first. Since STYROFOAM™ Brand Extruded Polystyrene Foam products are visco-elastic materials, adequate design safety factors should be used to prevent long-term creep. For static loads, 3:1 is suggested. For dynamic loads, 5:1 is suggested. |
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07 22 16 Roof Board Insulation (Protected Membrane Systems)
07 55 00 Protected Membrane Roofing Insulation

